DE3677656D1 - Anordnung zur ueberwachung von verzerrungen. - Google Patents

Anordnung zur ueberwachung von verzerrungen.

Info

Publication number
DE3677656D1
DE3677656D1 DE8686305171T DE3677656T DE3677656D1 DE 3677656 D1 DE3677656 D1 DE 3677656D1 DE 8686305171 T DE8686305171 T DE 8686305171T DE 3677656 T DE3677656 T DE 3677656T DE 3677656 D1 DE3677656 D1 DE 3677656D1
Authority
DE
Germany
Prior art keywords
arrangement
monitoring distortion
distortion
monitoring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE8686305171T
Other languages
English (en)
Inventor
Hitoshi Takai
Noriaki Morotomi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP60147551A external-priority patent/JPS627284A/ja
Priority claimed from JP60147552A external-priority patent/JPS627285A/ja
Priority claimed from JP60147538A external-priority patent/JPS627282A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE3677656D1 publication Critical patent/DE3677656D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis
    • G01R23/20—Measurement of non-linear distortion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/15—Performance testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/15—Performance testing
    • H04B17/18—Monitoring during normal operation

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)
DE8686305171T 1985-07-04 1986-07-03 Anordnung zur ueberwachung von verzerrungen. Expired - Lifetime DE3677656D1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP60147551A JPS627284A (ja) 1985-07-04 1985-07-04 中継増幅器
JP60147552A JPS627285A (ja) 1985-07-04 1985-07-04 中継増幅器
JP60147538A JPS627282A (ja) 1985-07-04 1985-07-04 中継増幅器

Publications (1)

Publication Number Publication Date
DE3677656D1 true DE3677656D1 (de) 1991-04-04

Family

ID=27319369

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686305171T Expired - Lifetime DE3677656D1 (de) 1985-07-04 1986-07-03 Anordnung zur ueberwachung von verzerrungen.

Country Status (3)

Country Link
US (1) US4797735A (de)
EP (1) EP0210007B1 (de)
DE (1) DE3677656D1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4797735A (en) * 1985-07-04 1989-01-10 Matsushita Electric Industrial Co., Ltd. Distortion surveillance apparatus for television signal transmission system
FR2658302B1 (fr) * 1990-02-13 1992-07-24 Thomson Lgt Procede, et dispositif, de mesure unique pour visualiser et qualifier la linearite d'une chaine de transmission.
US5233418A (en) * 1991-10-25 1993-08-03 Tektronix, Inc. Catv sweep system using a gated receiver
FR2694813B1 (fr) * 1992-08-12 1994-11-04 Pierre Itibar Dispositif de contrôle et de maintenance à distance de réseaux.
US5715242A (en) * 1995-12-20 1998-02-03 Ortel; William C. G. System for integrated distribution of switched voice and television on coaxial cable with phase distortion correction
US5955917A (en) * 1997-08-27 1999-09-21 Hughes Electronics Corporation Nonlinear amplifier calibration system and methods
KR100309748B1 (ko) * 1997-12-26 2001-12-17 윤종용 상향파일럿신호를이용한케이블에취에프씨망을위한양방향간선증폭기및에취에프씨망의케이블모뎀
US6091441A (en) * 1998-02-10 2000-07-18 Scientific-Atlanta, Inc. Radio frequency detector for cable television distribution systems
US6556239B1 (en) 2000-04-10 2003-04-29 Scientific-Atlanta, Inc. Distortion monitoring system for CATV transmission networks
US6545707B1 (en) * 2000-06-20 2003-04-08 Oak Technology, Inc. Video source with adaptive output to match load
US6995806B1 (en) 2000-08-04 2006-02-07 Scientific-Atlanta, Inc. Amplifier with a universal automatic gain control circuit
JP4194029B2 (ja) * 2003-02-26 2008-12-10 Ｋｄｄｉ株式会社 画像劣化自動検出装置
KR101247826B1 (ko) * 2008-12-26 2013-03-26 후지쯔 가부시끼가이샤 화상 처리 시스템, 화상 처리 장치 및 화상 처리 방법

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1019707B (de) * 1956-07-10 1957-11-21 Siemens Ag Verfahren und Einrichtung zur Messung mindestens einer bei der UEbertragung eines modulierten Hochfrequenzsignals auftretenden Verzerrungskomponente
DE1076174B (de) * 1956-11-08 1960-02-25 Felten & Guilleaume Gmbh Verfahren zur Messung von kleinen, bei der UEbertragung von Fernsehsignalen stoerenden nichtlinearen Verzerrungen
US3978282A (en) * 1971-02-04 1976-08-31 Avantek, Inc. Apparatus and method for measuring the transmission characteristics of a network
DE2111817B2 (de) * 1971-03-12 1980-06-19 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zum Pruefen und UEberwachen einer Grossgemeinschafts-Antennenanlage
CH549909A (de) * 1972-12-06 1974-05-31 Siemens Ag Albis Verfahren zur messung und/oder ueberwachung der uebertragungsqualitaet einer nachrichtenuebertragungsanlage.
US3862380A (en) * 1973-04-19 1975-01-21 Hekimian Laboratories Inc Intermodulation distortion analyzer
JPS5033723A (de) * 1973-07-25 1975-04-01
US3927281A (en) * 1974-12-03 1975-12-16 Frank R Bradley Instrument for measuring harmonic distortion in telephone transmission
US4365346A (en) * 1981-03-02 1982-12-21 Ael Microtel, Ltd. Built-in linearity testing arrangement for an FM radio system
US4491968A (en) * 1983-04-07 1985-01-01 Comsonics, Inc. Status monitor
DE3511274A1 (de) * 1985-03-28 1986-10-09 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zum erfassen der pegelaenderungen eines pilotfrequenzsignals
US4700222A (en) * 1985-05-30 1987-10-13 Gill Industries, Incorporated Apparatus and method of testing the frequency response of a cable television system
US4797735A (en) * 1985-07-04 1989-01-10 Matsushita Electric Industrial Co., Ltd. Distortion surveillance apparatus for television signal transmission system

Also Published As

Publication number Publication date
EP0210007B1 (de) 1991-02-27
US4797735A (en) 1989-01-10
EP0210007A1 (de) 1987-01-28

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)